<template>
    <div class="login-wrap">
        <div class="ms-login">
            <div class="ms-title">图书管理系统</div>
            <el-form :model="param" :rules="rules" ref="login" label-width="0px" class="ms-content">
                <el-form-item prop="username">
                    <el-input v-model="param.username" placeholder="username">
                        <el-button slot="prepend" icon="el-icon-lx-people"></el-button>
                    </el-input>
                </el-form-item>
                <el-form-item prop="password">
                    <el-input type="password" placeholder="password" v-model="param.password" >
                        <el-button slot="prepend" icon="el-icon-lx-lock"></el-button>
                    </el-input>
                </el-form-item>
                <el-form-item prop="code">
                    <el-input placeholder="验证码" v-model="param.code" @keyup.enter.native="submitForm()"> </el-input>
                </el-form-item>
                <el-form-item>
                    <img class="codeImg" :src="kaptchaUrl" alt @click="changeCode" />
                    <a href="#" @click="changeCode">看不清？换一张</a>
                </el-form-item>
                <div class="login-btn">
                    <el-button type="primary" @click="submitForm()">登录</el-button>
                    <el-button type="primary" @click="pushToRegist()">注册</el-button>
                </div>
            </el-form>
        </div>
    </div>
</template>

<script>
export default {
    data: function () {
        return {
            param: {
                username: 'liubei',
                password: '123456',
                code: ''
            },
            kaptchaUrl:'',
            rules: {
                username: [{ required: true, message: '请输入用户名', trigger: 'blur' }],
                password: [{ required: true, message: '请输入密码', trigger: 'blur' }],
                code: [{ required: true, message: '请输入验证码', trigger: 'blur' }]
            }
        };
    },
    created(){
        this.kaptchaUrl = "http://localhost:8081/booksys/getKaptcha?p=" + Date();
    },
    methods: {
        changeCode(){
            this.kaptchaUrl = "http://localhost:8081/booksys/getKaptcha?p=" + Date();
        },
        submitForm() {
            this.$refs.login.validate((valid) => {
                if (valid) {
                    this.$http.post('/login/'+this.param.code,this.param).then(res => {
                        var result = res.data;
                        if(result.status==1){
                            this.$message.success('登录成功');
                            window.sessionStorage.setItem("token",result.data.token);
                            window.sessionStorage.setItem('username', result.data.account.username);

                            this.$router.push('/');
                        }else{
                            this.$message.error(result.message);
                            return false;
                        }
                        
                    });
                    
                } else {
                    this.$message.error('请输入账号、密码和验证码');
                    return false;
                }
            });
        },
        pushToRegist(){
            this.$router.push('/regist');
        }
    }
};
</script>

<style scoped>
.login-wrap {
    position: relative;
    width: 100%;
    height: 100%;
    background-image: url(../../assets/img/login-bg.jpg);
    background-size: 100%;
}
.ms-title {
    width: 100%;
    line-height: 50px;
    text-align: center;
    font-size: 20px;
    color: #fff;
    border-bottom: 1px solid #ddd;
}
.ms-login {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 350px;
    margin: -190px 0 0 -175px;
    border-radius: 5px;
    background: rgba(255, 255, 255, 0.3);
    overflow: hidden;
}
.ms-content {
    padding: 30px 30px;
}
.login-btn {
    text-align: center;
}
.login-btn button {
    width: 40%;
    height: 36px;
    margin-bottom: 10px;
}
.login-tips {
    font-size: 12px;
    line-height: 30px;
    color: #fff;
}
</style>